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Chicago weather by month. Click on each chart for more information. Average Temperature in Chicago. The warm season lasts for 3.6 months, from June 2 to September 19, with an average daily high temperature above 73°F. The hottest month of the year in Chicago is July, with an average high of 82°F and low of 70°F.
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Hottest Month: July (76 °F avg) Coldest Month: January (26 °F avg) Wettest Month: June (4.09" avg) Windiest Month: January (18 mph avg) Annual precip. 35.09"
The average temperature is of 22.2 °C (72 °F), with a minimum of 17.1 °C (62.8 °F) and a maximum of 27.3 °C (81.1 °F). On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 9.5 °C (49.5 °F). However, it dropped to 3.9 °C (39 °F) in June 2003.
Chicago Temperatures: Averages by Month. The numbers here tell you how hot and cold the weather usually is in Chicago, Illinois during each month of the year. The average high and low temperatures are listed below by month and annually for Chicago, in both degrees Fahrenheit and Celsius.
Current Hazards. Current Conditions. Radar. Forecasts. Rivers and Lakes. Climate and Past Weather. Local Programs. Daily, Monthly, and Annual Climate Normals for Chicago, IL. This page houses the latest 30-year climate normals (1991-2020) for Chicago. JAN. FEB. MAR. APR. MAY. JUN. JUL. AUG. SEP. OCT. NOV. DEC. Monthly/Annual. January:
During these months, the city rejoices under ample warmth with upper temperatures averaging between 61°F (16.1°C) and 70.5°F (21.4°C) and cooler nights seeing temperatures from 50.4°F (10.2°C) to 60.3°F (15.7°C). Humidity remains fairly comfortable ranging from 79% to 80%.
average temperature by month Chicago. The warmest month of the year is July, with an average temperature of 23.8 °C | 74.8 °F. At -3.8 °C | 25.2 °F on average, January is the coldest month of the year.
